Drag the underlined phrases to the correct places in the table in Exercise 3.
1 They are supposed to be free. (para. D)
2 They are obliged to run around a specified area. (para. C)
3 Ordinary people can’t treat animals badly but scientists are permitted to. (para. D)
4 They were so important that UK citizens were forbidden to shoot them. (para. B)
5 The Navy is likely to start using other marine animals for this work.(para. A)

必须，不得不 must, need to, have had to, have to, had to 1 1

（不）应该，建议 ought to, shouldn’t, should 2 2

不需要，没必要 doesn’t have to, don’t need to, needn’t

有（无）能力 can, could, were able to, have been able to, couldn’t

禁止，不准 mustn’t, couldn’t, can’t, 3 3

允许，可以 can, are allowed to, 4 4

有可能 might, can , 5 5

__4__(完形填空)
.are obliged to
.are supposed to
.were forbidden to
.are permitted to
.is likely to